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  • zxdawn · 2 ✖

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  • open_mfdataset change the attributes of Coordinates · 2 ✖

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id html_url issue_url node_id user created_at updated_at ▲ author_association body reactions performed_via_github_app issue
450458650 https://github.com/pydata/xarray/issues/2636#issuecomment-450458650 https://api.github.com/repos/pydata/xarray/issues/2636 MDEyOklzc3VlQ29tbWVudDQ1MDQ1ODY1MA== zxdawn 30388627 2018-12-29T02:38:00Z 2018-12-29T02:39:41Z NONE

@dcherian It works by netCDF4, but not for xarray: ``` file = Dataset('ds1.nc') print (file.variables['time'],'\n')

with xr.open_dataset('ds1.nc') as f: print (f.time.attrs) Output: <class 'netCDF4._netCDF4.Variable'> int64 time(time) units: hours since 2015-01-01 unlimited dimensions: current shape = (3,) filling on, default _FillValue of -9223372036854775806 used

OrderedDict() ```

What's the difference between units and attrs?

 
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   open_mfdataset change the attributes of Coordinates 394625579
450456616 https://github.com/pydata/xarray/issues/2636#issuecomment-450456616 https://api.github.com/repos/pydata/xarray/issues/2636 MDEyOklzc3VlQ29tbWVudDQ1MDQ1NjYxNg== zxdawn 30388627 2018-12-29T02:17:49Z 2018-12-29T02:17:49Z NONE

@xylar Thanks! I just found another question similar to this one.

I've tried some operations: with xr.open_dataset('merge.nc') as f: print (f['temperature'],'\n') print ('---------------------------') print (f.mean(dim='time')) print ('---------------------------') print (f['temperature'].loc[:,:,'2015-01-05T04:00:00',]) print ('---------------------------')

It works fine: ``` <xarray.DataArray 'temperature' (x: 2, y: 2, time: 6)> array([[[-0.022611, -1.428088, -0.655508, 0.977389, -0.428088, 0.344492], [ 0.430102, 0.996973, -0.882054, 1.430102, 1.996973, 0.117946]],

   [[ 0.157233, -0.230397, -0.505775,  1.157233,  0.769603,  0.494225],
    [-0.075826, -1.933904, -0.823982,  0.924174, -0.933904,  0.176018]]])

Coordinates: lon (x, y) float64 ... lat (x, y) float64 ... * time (time) datetime64[ns] 2015-01-05T04:00:00 2015-01-05T05:00:00 ... Dimensions without coordinates: x, y

<xarray.Dataset> Dimensions: (x: 2, y: 2) Coordinates: lon (x, y) float64 ... lat (x, y) float64 ... Dimensions without coordinates: x, y Data variables: temperature (x, y) float64 -0.2021 0.6817 0.307 -0.4446

<xarray.DataArray 'temperature' (x: 2, y: 2)> array([[-0.022611, 0.430102], [ 0.157233, -0.075826]]) Coordinates: lon (x, y) float64 ... lat (x, y) float64 ... time datetime64[ns] 2015-01-05T04:00:00 Dimensions without coordinates: x, y

```

 
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   open_mfdataset change the attributes of Coordinates 394625579

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